Cell Zn-Cu Cu-Pb Cu-Fe Zn-Pb Fe-Zn Fe-Pb EXP. 3 VOLTAIC CELLS POST-LAB REPORT WORKSHEETS Part 2 - Measurement of Cell Potentials 1. Note: Because [Fe²] # 0.5 M. the experimental voltages can be expected to deviate from the calculated voltages (using the Nernst equation) where Fe² half-cells are involved. Experimental Voltage Readings and Average 1.092+ 1,092 2 = 1.095 V 0.465 +0.465 2 = 0.465 V 0.028 +0017 = 00275V 0.6%0+ 0.628 20.629 V 0.321 +0.322 2 = 0.3215 V 0.002 1 0.004 2 At which metal does reduction occur? Cn Cult (agite →→→>Cur Си +0.16V Си +0.16V +0.16 V Zo -0.76V Zn -0.76✓ Pb At which metal does oxidation occur? -0.13V In Zn(a)+26 → zn (s) -0.76V Pb -0.13V Pb -0.13V Fe +0.77V +0.77V Fe Which metal is the stronger reducing agent? 2n -076 V Pb -0.13V Fe +0.77V Pb. -0.13 V Fe +0.77 Fe Calculated Voltage (assume 0.5 M) -0.003 V +0.77 +0.77 2. On the basis of the calculated voltages, write the order for the reducing strength of the four metals (Zn, Cu, Pb, Fe), in order of decreasing reducing strength.

Cell Zn-Cu Cu-Pb Cu-Fe Zn-Pb Fe-Zn Fe-Pb EXP. 3 VOLTAIC CELLS POST-LAB REPORT WORKSHEETS Part 2 - Measurement of Cell Potentials 1. Note: Because [Fe²] # 0.5 M. the experimental voltages can be expected to deviate from the calculated voltages (using the Nernst equation) where Fe² half-cells are involved. Experimental Voltage Readings and Average 1.092+ 1,092 2 = 1.095 V 0.465 +0.465 2 = 0.465 V 0.028 +0017 = 00275V 0.6%0+ 0.628 20.629 V 0.321 +0.322 2 = 0.3215 V 0.002 1 0.004 2 At which metal does reduction occur? Cn Cult (agite →→→>Cur Си +0.16V Си +0.16V +0.16 V Zo -0.76V Zn -0.76✓ Pb At which metal does oxidation occur? -0.13V In Zn(a)+26 → zn (s) -0.76V Pb -0.13V Pb -0.13V Fe +0.77V +0.77V Fe Which metal is the stronger reducing agent? 2n -076 V Pb -0.13V Fe +0.77V Pb. -0.13 V Fe +0.77 Fe Calculated Voltage (assume 0.5 M) -0.003 V +0.77 +0.77 2. On the basis of the calculated voltages, write the order for the reducing strength of the four metals (Zn, Cu, Pb, Fe), in order of decreasing reducing strength.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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